1. Ambient air temperature: maximum temperature +40℃, minimum temperature -15℃;
2. Humidity conditions:
Daily average relative humidity: ≤95%, daily average water vapor pressure does not exceed 2.2KPA;
Monthly average relative humidity: ≤90%, daily average water vapor pressure does not exceed 1.8KPA.
3. Altitude: 4000M and below;
4. Earthquake intensity: no more than 8 degrees;
5. The surrounding air should not be significantly polluted by corrosive or combustible gas, water vapor, etc.;
6. No frequent violent vibration places;
■It adopts fully assembled structure, which is light and beautiful, and can be installed in any combination, which is convenient for infinite expansion and extension.
■It can be equipped with FN12-12 pneumatic load switch and combined electrical appliances, and also can be equipped with FZN25-12 vacuum load switch and combined electrical appliances.
■Small size, maintenance-free, three-phase linkage structure, with obvious isolation fracture.
Load switches and combined electrical appliances have flexible installation methods, which can be installed on the left and right sides, in the front, or upside down (FZ N 25 cannot be installed upside down).
■It can be operated manually and electrically, and it can have remote control function.
■It is equipped with perfect and reliable mechanical linkage and interlocking device, which fully achieves the function of “five preventions”